Auxiliary-air inlet



c. B. SHAEFF.

AUXILIARY AIR INLET.

APPLICATION FILED JULY 29, 1919.

1,398,805. Patented N0v .29,1921.

UNETED STATES PATENT OFFICE.

CHARLES B. SHAEFF, or NORRISTOWN, PENNSYLVANIAQ- AUXILIARY-Ara INLET.

' Application filed July 29,

To aZZ whom it may concern:

Be it known that I, CHAnLns B. SHAEFF, a citizenof the United States, residing at Norristown, in the county of Montgomery and State. of Pennsylvania, have invented certain new and useful improvements in Auxiliary-1 in Inlets, of which the following is a specification.

This invention relates to improvements in engine attachments, andmore particularly to a device designed for attachment between the coupled portions of an engine intake manifold and carbureter for admitting an additional supply of air to the manifold and thereby economize in the consumption of liquid fuel and render the explosive mixture more readily combustible.

The invention has for its primary object to provide an attachment of this character which is exceptionally simple in construction and convenient and effective in use, the admission of air to the manifold being controlled entirely by a single conveniently accessible air valve supported upon the attachment.

Another object is the provision of an attachment of this character in which the supply of auxiliary air is distributed in such manner as to secure maximum efliciency in the vaporization of the liquid fuel.

With these and other objects in view as will appear as the description proceeds the invention comprises the novel features of construction, combination of elements and arrangements of parts which will be more fully described in the following specification as set forth with particularity in the claims appended hereto.

In the drawings:

Figure 1 represents a longitudinal sectional view through the attachment.

Fig. 2 represents an edge elevation thereof.

Fig. 3 represents a longitudinal sectional view taken at right angles to Fig. 1, looking downwardly.

Fig. 4: represents a transverse sectional view through the attachment.

Fig. 5 represents a fragmentary detail sectional view with the plane of the line 5-5 of Fig. 3.

Referring to the drawings in detail wherein similar reference numerals designate corresponding parts throughout the several views, numerals 5 indicate the body of the Specification of Letters Patent.

1919. Serial No. 314,124.

attachment which is preferably shaped in conformity with the coupling flanges ordinarily provided with the terminals of an engine carbureter and intake manifold, and is provided terminally with apertures 6 for accommodating the bolts by which the carbureter and manifold are connected, such bolts being utilized to securely clamp the attachment in operative position between these parts. The central portion of the body is provided with an aperture 7 of the same internal diameter and registering with the bore of the manifold providing a'passageway for the gaseous fuel incident to its passage to the intake manifold of the explosive engine in connection with which the attachment is used.

A foraminous member 8 constructed of wire screen of suitable mesh is engaged with the top face of the body 5 and is clamped in position between the body and the adjacent terminal flange of the inlet manifold (not shown). The central portion of the screen which overlies the central opening 7 in the body is of semi-spherical shape presenting an increased area for contact with the gas passing therethrough.

The body 5 is formed with opposed en.- largements 9 and 10 which project laterally thereof and are provided with internal air chambers 11, having open terminals receiving the adjacent terminals of a substantially U-shaped air pipe 12 which extends about one terminal of the body 5 and is designed to conduct air from the chamber of the lateral enlargement 10 to the chamber of the lateral enlargement 9 whereby air is supplied through the latter.

The wall of the opening '7 is formed with opposed groups of air ports 13, one group having communication with the chamber of the lateral enlargement 9 and the other group having communication with the internal chamber of the enlargement 10. As suggested in Fig. 4, the respective groups of apertures or ports 13 are disposed obliquely, gradually rising from the outer terminals which communicate. with the chambers 11 to their inner discharge terminals Which communicate with the openings 7, thus causing the air discharged therefrom to be directed upon the semi-spherical portion of the member 8 and materially assist in the evaporation of such liquid fuel which may have condensed thereon.

' Patented Nov. 29, 1921.

Atmospheric air is admitted to the chamber 11 of the enlargement 9 through a mam air inlet port 1a and a pivoted shutter valve to control the quantity Gill. air admitted to the attachment in order to secure maximum working. 'efiiciencyoi the engineto which the attachment is applied.

The shutter valve 15 is provided with a radial extension 16 constituting a handle for convenience in adjustment and the terminal of the extension is preferably apertured to receive a rod or other actuating de vice (not shown) which may be extended to a point conveniently near the driver of the vehicle, in case the attachment isv 'ap plied to the engine of a motor vehicle. The top face o f the body 5 is formed with an enlargement ,or boss .17 receiving a screw 18 upon which the medialportion of the eXl ension 16 is pivotally secured, thereby afiording a pivotal support for the valve 15 and suiiicient friction is preferably .developed at the pointoi attachment of the valve to the body 5 as to secure the valve in adjusted position against accidental displacement during vibration of the engine incident to operation thereof.

That I claim is: z 7 I 1. An attachment of the class described comprising an elongated body member having attaching apertures'in its end, and a central openin between said apertures adapted'to register with the bore of an engine manifold when applied, a Wirescreen atomizer mounted over said opening, said body having longitudinally extending air chambers formed on opposite sides thereof, said chambers being closed. at one end and open at the other, a pipe connecting the open of said chambers, one of said chambers having a valvecontrolled air inlot and each having a plurality of air passages communicating with the central opening in saidbody.

2. An attachment of the class d scribed comprising a body having a central opening to. register with the bore of an engine hereto.

CHARLES E. SHAEFF. 

